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| Do you ever serve as the secretary of a class reunion ? Think about it
as if you were the secretary. It is assumed that the number of participants in the class reunion is 35 and the membership fee is 3500 yen. Also , suppose that there are only two types of participants : those who need change with four 1000-yen bills and those who don't need change with three 1000-yen bills and one 500-yen coin. Membershhip fees are collected in order from those who arrive at the venue , and those who need change are given a 500-yen coin on the spot. However , based on experience , it is assumed that the ratio of those who need change and those who don't need it is 50/50. Now , as the secretary , how many 500-yen coins should you prepare for change ? |
| The ratio of people who need change and those who don't need change is
50/50 , so if one coin is tossed and heads come up , peope who don't need
change will come , and if tails come up , people who need change will come. In other words , 3000 yen and 500 yen will be paid when heads come up , so the secretary will have one more 500 yen coin. Also , if tails come out , 4000 yen will be paied , so change will be required , and one 500 yen coin will be removed from the secretary's hand. |
| Please download the simulation software "Preparing Change Experiment"
and play with it. of course , it's free , so feel free to use it. The downloaded file is conpressed , so please decompress it. ＜How to use downloaded application software for windows＞ ■About Preparing Chang Experiment1 A coin-tossing experiment can be performed on a computer. ・Click the the [AutoStart] button. ■About Preparing Chang Experiment2 The number of customers (the number of paticipants in the class reunion) and the number of experiments are specified , and the relationship between the shortage number (the number of 500-yen coins prepared by secretary) and the number of experiments is displayed in a frequency distribution table. ・Enter an integer in the windoew for setting the number of customers and the number of experiments , and click the {OK} button. ・Click the [StartExperiment] button ■About Preparing Chang Experiment3 The number of customers (the number of paticipants in the class reunion) and the number of experiments are specified , and the relationship between the shortage number (the number of 500-yen coins prepared by secretary) and the number of experiments is displayed in a frequency distribution graph. ・Enter an integer in the windoew for setting the number of customers and the number of experiments , and click the {OK} button. ・Click the [StartExperiment] button |
| No | Simuration software name | Compatible OS |
| １ | VB application software "Preparing Change Experiment1" | Windows Me/2000/XP/Vista/7/8/10 |
| ２ | VB application software "Preparing Change Experiment2" | Windows Me/2000/XP/Vista/7/8/10 |
| ３ | VB application software "Preparing Change Experiment3" | Windows Me/2000/XP/Vista/7/8/10 |
| ４ | Java application software "Preparing Change Experiment" | Windows XP/Vista/7/8/10 |
| To run the VB application , it is necessay to download and install VB
Runtime "vb6rt340.exe". To install , double-click the downloaded file "vb6rt340.exe" , double-click file "setup.exe" in the created folder "vb6rtest , "and follow the message to install. |
| A Java application can be operated only on an environment in which JRE
(Java SE execution environment) is instolled. Download the JDK (Java Development
Kid) from the Oracle website and install it. (Free) |
| The following publishes a list of Java application programs. |
| No | Program list name | File format |
| １ | Java program list "Preparing Change Experiment" |